@import url("https://fonts.googleapis.com/css2?family=Onest:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");:root{--bg:#fafaf8;--bg-card:#fff;--bg-sidebar:#1a1a1e;--bg-accent:#f0efeb;--bg-success:#e8f5e9;--bg-warning:#fff8e1;--bg-danger:#ffebee;--bg-info:#e3f2fd;--text:#1a1a1e;--text-secondary:#6b6b76;--text-muted:#9e9ea8;--text-inverse:#fafaf8;--accent:#e85d2c;--accent-hover:#d14e1f;--accent-light:#fef0eb;--border:#e8e8e4;--border-hover:#d0d0cc;--success:#2e7d32;--warning:#f57f17;--danger:#c62828;--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:20px;--shadow-sm:0 1px 2px rgba(0,0,0,.04);--shadow:0 2px 8px rgba(0,0,0,.06);--shadow-lg:0 8px 24px rgba(0,0,0,.08);--font:"Onest",-apple-system,sans-serif;--font-mono:"JetBrains Mono",monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}input,select,textarea{font-family:var(--font);font-size:15px;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-card);color:var(--text);transition:border-color .2s;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}button{font-family:var(--font);cursor:pointer;border:none;border-radius:var(--radius);font-weight:500;transition:all .15s ease}button:active{transform:scale(.97)}.btn-primary{background:var(--accent);color:#fff;padding:11px 24px;font-size:15px}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-accent);color:var(--text);padding:9px 20px;font-size:14px}.btn-secondary:hover{background:var(--border)}.btn-ghost{background:transparent;color:var(--text-secondary);padding:8px 16px;font-size:14px}.btn-ghost:hover{background:var(--bg-accent);color:var(--text)}.btn-danger{background:var(--bg-danger);color:var(--danger);padding:9px 20px;font-size:14px}.btn-danger:hover{background:#ffcdd2}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm)}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:500}.badge-success{background:var(--bg-success);color:var(--success)}.badge-warning{background:var(--bg-warning);color:var(--warning)}.badge-danger{background:var(--bg-danger);color:var(--danger)}.badge-info{background:var(--bg-info);color:#1565c0}.progress-bar{width:100%;height:6px;background:var(--bg-accent);border-radius:3px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--accent);border-radius:3px;transition:width .4s ease}.auth-layout{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(135deg,#fafaf8,#f0efeb)}.auth-card{width:100%;max-width:420px;background:var(--bg-card);border-radius:var(--radius-xl);padding:40px;box-shadow:var(--shadow-lg)}.auth-logo{font-size:22px;font-weight:700;text-align:center;margin-bottom:8px;color:var(--text)}.auth-subtitle{text-align:center;color:var(--text-secondary);font-size:14px;margin-bottom:32px}.form-group{margin-bottom:18px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-error{font-size:13px;color:var(--danger);margin-top:6px}.layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-sidebar);color:var(--text-inverse);padding:24px 16px;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-logo{font-size:18px;font-weight:700;padding:0 12px 24px;border-bottom:1px solid hsla(0,0%,100%,.08);margin-bottom:16px}.sidebar-logo span{color:var(--accent)}.sidebar-nav{flex:1 1;display:flex;flex-direction:column;gap:2px}.sidebar-link{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius);color:hsla(0,0%,100%,.55);font-size:14px;font-weight:400;transition:all .15s;cursor:pointer;text-decoration:none}.sidebar-link:hover{background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.85)}.sidebar-link.active{background:hsla(0,0%,100%,.1);color:#fff;font-weight:500}.sidebar-link svg{width:20px;height:20px;opacity:.7}.main-content{flex:1 1;margin-left:260px;padding:32px 40px;max-width:1100px}.page-header{margin-bottom:32px}.page-title{font-size:26px;font-weight:700;letter-spacing:-.02em}.page-subtitle{font-size:15px;color:var(--text-secondary);margin-top:4px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:16px;gap:16px;margin-bottom:32px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.stat-label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-weight:500}.stat-value{font-size:28px;font-weight:700;margin-top:4px;letter-spacing:-.02em}.modules-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:20px;gap:20px}.module-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:box-shadow .2s,transform .15s;cursor:pointer}.module-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.module-cover{height:140px;background:var(--bg-accent);display:flex;align-items:center;justify-content:center;font-size:48px}.module-body{padding:20px}.module-title{font-size:16px;font-weight:600;margin-bottom:6px}.module-desc{font-size:13px;color:var(--text-secondary);margin-bottom:14px}.module-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted)}.table-wrap{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}table{width:100%;border-collapse:collapse}th{text-align:left;padding:12px 16px;font-size:12px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;background:var(--bg-accent)}td,th{border-bottom:1px solid var(--border)}td{padding:14px 16px;font-size:14px}tr:last-child td{border-bottom:none}tr:hover td{background:var(--bg-accent)}.toggle{position:relative;width:44px;height:24px;cursor:pointer}.toggle input{display:none}.toggle-track{position:absolute;inset:0;background:var(--border);border-radius:12px;transition:background .2s}.toggle input:checked+.toggle-track{background:var(--accent)}.toggle-thumb{position:absolute;top:2px;left:2px;width:20px;height:20px;background:#fff;border-radius:50%;transition:transform .2s;box-shadow:0 1px 3px rgba(0,0,0,.15)}.toggle input:checked~.toggle-thumb{transform:translateX(20px)}.toast{position:fixed;bottom:24px;right:24px;padding:14px 20px;border-radius:var(--radius);font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);z-index:1000;animation:slideUp .3s ease}.toast-success{background:var(--success);color:#fff}.toast-error{background:var(--danger);color:#fff}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width:768px){.sidebar{display:none}.main-content{margin-left:0;padding:20px 16px}.mobile-header{display:flex;align-items:center;justify-content:space-between;padding:16px;background:var(--bg-sidebar);color:#fff;position:-webkit-sticky;position:sticky;top:0;z-index:100}.auth-card{padding:28px 24px}.stats-grid{grid-template-columns:repeat(2,1fr)}.modules-grid{grid-template-columns:1fr}}.lesson-content{max-width:720px;line-height:1.8;font-size:16px}.lesson-content h2{font-size:20px;font-weight:600;margin:28px 0 12px}.lesson-content p{margin-bottom:16px}.lesson-content ol,.lesson-content ul{margin-bottom:16px;padding-left:24px}.lesson-content li{margin-bottom:8px}.video-embed{position:relative;padding-bottom:56.25%;border-radius:var(--radius);overflow:hidden;margin-bottom:24px;background:#000}.video-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none}.test-question{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:16px}.test-question-title{font-weight:600;margin-bottom:14px}.test-option{display:flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:8px;cursor:pointer;transition:all .15s;font-size:14px}.test-option.selected,.test-option:hover{border-color:var(--accent);background:var(--accent-light)}.test-option.correct{border-color:var(--success);background:var(--bg-success)}.test-option.wrong{border-color:var(--danger);background:var(--bg-danger)}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state-icon{font-size:48px;margin-bottom:16px;opacity:.3}.empty-state-text{font-size:16px}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px}.modal{background:var(--bg-card);border-radius:var(--radius-xl);padding:32px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal-title{font-size:20px;font-weight:600;margin-bottom:20px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px}@keyframes slideDown{0%{opacity:0;max-height:0}to{opacity:1;max-height:600px}}.remi-bubble{display:flex;gap:14px;align-items:flex-start;background:#fef0eb;border-radius:var(--radius-lg);padding:18px 20px;border:1px solid rgba(232,93,44,.15)}.remi-bubble .remi-icon{font-size:32px;flex-shrink:0}.remi-bubble .remi-text{font-size:14px;color:var(--text-secondary);line-height:1.6}@keyframes xpPop{0%{transform:scale(.8) translateY(10px);opacity:0}50%{transform:scale(1.1) translateY(-5px);opacity:1}to{transform:scale(1) translateY(0);opacity:1}}.xp-pop{animation:xpPop .4s ease}.ach-glow{box-shadow:0 0 20px rgba(232,93,44,.15);animation:glow 2s ease-in-out infinite alternate}@keyframes glow{0%{box-shadow:0 0 8px rgba(232,93,44,.1)}to{box-shadow:0 0 20px rgba(232,93,44,.25)}}